Multiplicity dependent J/ψ and ψ(2S) production at forward and backward rapidity in p+p collisions at \sqrt{s}=200 GeV

The J/\psi and \psi(2S) charmonium states, composed of c\bar{c} quark pairs and known since the 1970s, are widely believed to serve as ideal probes to test quantum chromodynamics in high-energy hadronic interactions. However, there is not yet a complete understanding of the charmonium-production mechanism. Recent measurements of J/\psi production as... Show more